FR2973795A1 - DEVICE FOR NEUTRALIZING ACIDIC CONDENSATES - Google Patents

Abstract

The invention relates to a device for neutralizing acid condensates, comprising a condensate collection tank (1) and a cartridge (4) containing an acid neutralization reagent and having a condensate inlet opening and an outlet opening of the condensates. condensates. According to the invention, said cartridge (4) is placed at least partly in said tray (1), so that said outlet opening is below a minimum level (31) of liquid in said tray (1) .

Description

Device for neutralizing acid condensates

FIELD OF THE INVENTION The present invention relates to the evacuation and treatment of acidic condensates, for example condensates that can be produced in condensing boilers. The invention particularly relates to the treatment of these condensates, in order to reduce their acidity. 2. PRIOR ART Condensing boilers are increasingly used combustion boilers, especially for heating homes. Boilers of this type, generally using as fuel gas or fuel oil, have the particularity of taking advantage of the latent heat of the water vapor contained in the exhaust gas, by condensing this water vapor to reject the water, called condensate, in liquid form. This process makes it possible, under certain conditions, to improve the efficiency of the boiler. Due to the chemical composition of the fumes produced during the combustion, the condensates resulting from the condensation of the water vapor contained in the fumes are acidic. They can thus comprise sulfuric acid, and a small amount of hydrochloric acid and nitric acid. Thus, condensates from gas-fired boilers may have a pH of between 3 and 5 and condensates from oil-fired condensing boilers have a pH of between 2 and 4. These condensates, after extraction from the boiler, are removed in wastewater networks. However, their acidity can damage the pipes and is harmful to the environment. It is therefore desirable, and in some cases mandatory, to treat these condensates in order to reduce their acidity. Such a treatment must for example allow the condensates to be brought back to a pH close to neutral. This treatment is generally carried out by bringing the condensates into contact with aggregates capable of reacting with the acid to neutralize it, for example calcareous aggregates. Several devices of this type are known from the prior art, for example from document FR 2 930 542. Disadvantages of the prior art These known devices have several drawbacks. On the one hand, the installation near the boilers of a complex condensate evacuation circuit, often having successively a lifting pump, a siphon and an acid neutralizer, generates an installation cost and a space requirement. important, and increased risk of malfunction. On the other hand, the known devices have a declining efficiency over time, particularly due to sludging by sludge generated by the reaction of acids on the aggregates. This sludging can sometimes cause a loss of efficiency or even a blockage resulting in leakage of condensate, which can generate significant damage. Finally, their maintenance, and in particular the annual replacement of aggregates they contain, is complicated, requiring the appropriate recharge and often imposing a disassembly of the device. OBJECTIVES OF THE INVENTION The present invention aims to overcome these disadvantages of the prior art.

In particular, the present invention aims to provide an acid condensate neutralization device that allows to effectively raise the pH of the condensate. A particular object of the invention is to provide, in at least some of its embodiments, such a device in which the risk of accumulation of sludge generated by the neutralization of acid condensates is reduced. Another object of the invention is to provide, in at least some of its embodiments, such a device that allows a simplification of the condensate evacuation circuit of the boiler.

Yet another object of the invention is to provide such a device that can be installed and maintained easily. 4. DESCRIPTION OF THE INVENTION These objectives, as well as others which will become clearer later, are achieved by means of an acid condensate neutralization device, comprising a condensate collection tank and a cartridge containing a reagent of acid neutralization and having a condensate inlet opening and a condensate outlet opening, in which, according to the invention, the cartridge is placed at least partly in the tray, so that said outlet opening is in below a minimum level of liquid in the tank. This position of the outlet opening of the cartridge makes it possible to form a siphon preventing the entry of gas into the cartridge through the outlet opening. Furthermore, it allows in some embodiments that a portion of the reagents can be permanently in contact with the condensate contained in the tray, and can continue the reaction with the condensate, if necessary. Finally, the confinement of the reagents in a cartridge, preferably removable, allows easy maintenance of the device. Preferably, at least a portion of the reagents contained in the cartridge is located above a maximum level of liquid in the tray. In this way, the condensates arriving through the inlet opening of the cartridge arrive directly in contact with the reagents, without having been previously diluted with partially treated condensates. This direct contact allows a better efficiency of the neutralization reaction.

According to an advantageous embodiment of the invention, the neutralization device comprises a device for lifting the condensates collected in the tank, so as to form a condensate lift pump. This embodiment makes it possible to realize in a small space the treatment and the lifting of the condensates, the same tank being used for the two functions.

Advantageously, this lifting device generates movements of liquid in the tray, so as to contribute to the cleaning of said cartridge outlet opening and / or reagents located near said outlet opening.

These movements, conventionally variations in liquid level in the tank, allow the sludge to be driven downwards, and to prevent their accumulation at the bottom of the cartridge, which can cause at least partial plugging thereof. reagent contained in said cartridge is formed of aggregates capable of reacting with the acids contained in the condensate entering through said inlet opening to neutralize them. The use of aggregates allows easy flow of the liquid through the cartridge, and allows contact between this liquid and a large reagent surface. These granulates may for example be made of calcareous materials, such as crushed marble, or be based on of magnesium hydride.

Advantageously, the average size of these aggregates located in a lower portion of the cartridge is at least 30% greater than the average size of the aggregates located in an upper portion of the cartridge. Thus, it is possible to combine in the same cartridge fine aggregates with more surface area of contact with the liquid, in the upper portion, and larger aggregates having larger gaps and less likely to clog the outlet opening, in the lower portion in which sludge resulting from the reaction between condensates and aggregates may accumulate. Preferably, the cartridge is placed substantially vertically in the tray, so as to allow a gravity flow of the condensates through the cartridge. This position of the cartridge allows a good flow, limiting the risk of accumulation of sludge. More generally, an inclination of the upper cartridge at 45 ° to the horizontal may allow satisfactory flow.

According to an advantageous embodiment, the cartridge is manufactured at least partly in transparent material, so as to allow a visual control of the acid neutralization reagent it contains. The user can thus visually check that the level of reagent in the cartridge remains above a specified level. It can also easily detect possible accumulations of sludge in the cartridge. Preferably, the cartridge is removably mounted on an upper wall of the tray. This assembly allows easy maintenance by replacing the cartridge when the reagent that it contains is consumed. Advantageously, at least a portion of the cartridge extends above the level of said upper wall. According to a possible embodiment of the invention, a cartridge portion extending above the level of said upper wall has a wider section than the cartridge portion extending below said top wall. This arrangement makes it possible to use a large quantity of reagents in the same cartridge. Advantageously, the amount of reagent in said cartridge is such that, before use, a part of the reagent extends above the level of said upper wall. In some embodiments, this reagent arrangement allows easy visual inspection of the cartridge, which must be changed when the level of reagent falls below the level of that top wall.

Preferably, the cartridge comprises support elements bearing on the bottom of said tray and for maintaining said outlet opening at a distance from said bottom. This arrangement, and more generally the maintenance of the outlet opening at a distance from the bottom of the tank, makes it possible to limit the risk of clogging of the outlet opening of the cartridge.

According to an advantageous embodiment of the invention, the cartridge comprises deflection means increasing the path to travel for the condensates, in contact with said neutralization reagent, between said inlet opening and said outlet opening.

These deflection means, or baffles, allow to increase the contacts between the condensates and the reagents, and thus increase the effectiveness of the neutralization, mainly in the case of large cartridges. Preferably, the cartridge is configured to allow gravity flow to said outlet opening of all liquid entering through said inlet opening. This configuration of the cartridge makes it possible to avoid any accumulation of sludge. 5. List of Figures The present invention will be better understood on reading the following description of preferred embodiments, given by way of illustration and without limitation, and accompanied by figures, among which: FIG. 1 is a simplified sectional view of FIG. a condensate lift pump forming a neutralization device according to a first embodiment of the invention; Figure 2 is a partial sectional view of a neutralization cartridge implemented in the pump of Figure 1; Figure 3 shows a plug forming the outlet opening of the cartridge of Figure 2; Figure 4 is a perspective view of a portion of the closure plate of the tray of the condensate pump of Figure 1; Figure 5 is a sectional view of a condensate neutralization device according to a second possible embodiment of the invention; Figure 6 is a sectional view of a neutralization cartridge according to another possible embodiment of the invention; Fig. 7 is a sectional view of a neutralization cartridge according to a variant of the embodiment of Fig. 6; FIG. 8 is a perspective view of a baffle implemented in the cartridge of FIG. 7. DESCRIPTION OF AN EMBODIMENT OF THE INVENTION Operation of the Pump FIG. condensates forming a neutralization device according to a first embodiment of the invention. This pump comprises a tank 1 for collecting the condensates and a lifting device 2 for discharging the condensates collected in the tank. This lifting device 2 comprises, in the example shown, a motor 21 driving in rotation a shaft 22 at the end of which is assembled a turbine 23. The turbine 23 is rotated by the motor in a chamber 24 immersed in the tank 1, and in which the condensates contained in the tank 1 can enter through an opening 25 located around the shaft 22. The rotation of the turbine 23 pushes these condensates to a discharge pipe 26 opening at the periphery of the chamber 24 in the plane of rotation of the turbine 23. Thus, the lifting device 2 discharges the condensate from the tank 1 through the discharge pipe 26, according to the well-known principle of centrifugal pumps.

The lifting device 2 is advantageously controlled as a function of the level of liquid in the tank 1. This level can be measured using a measuring device using one or more floats, or by any other type of known device. those skilled in the art, such as a capacitive or resistive detection device. A control system starts and stops the motor 21 of the pumping device 2 according to the position of the floats, so that the level of liquid in the tank 1 always remains between a minimum level 31 of about 40 mm and a maximum level 32 of about 60 mm, shown in dashed lines in FIG. 1. Thus, this control system can start the engine 21 when the liquid level in the tank reaches the maximum level 32, which serves as the threshold triggering the pump, and keep it running until the liquid level drops back to the minimum level 31, which serves as the stopping threshold of the pump. The tray 1 is closed by a lid, or plate 11, which forms the upper wall of the tray and which carries an open cage 12, supporting the chamber 24 of the lifting device. Furthermore, a cover 13 can be assembled on the upper face of the plate 11 to protect the motor 21, which is mounted on this plate 11. Neutralization cartridge According to the invention, the arrival of the condensates, generally from a boiler, in the tank 1 of the condensate pump is through a neutralization cartridge 4, which is therefore in the extension of the condensate supply line in the tank associated with the pump. This neutralization cartridge 4 is shown uncut in FIG. 1, but in partial section in FIG. 2. It comprises a case 41 which, in the embodiment shown, is substantially cylindrical, and which has openings at these two ends. able to pass liquids. This case 41 contains a plurality of aggregates capable of reacting with the acids to neutralize them. These aggregates can be made of calcareous materials, such as crushed marble, or by any other means of neutralization known to those skilled in the art, such as granules based on magnesium hydride. The case 41 has at its upper end an inlet opening 42 which can advantageously form a tip on which can be force-fitted hose or a flexible connector. This case 41 also comprises at its lower end an outlet opening constituted by a grid 44 preventing the passage of aggregates but allowing the liquid outlet. This grid 44 is kept away from the bottom of the tray in which the cartridge is disposed by support legs 43, maintaining this grid at a distance of about 10 mm from this bottom. According to an advantageous embodiment of the invention, this grid 44 can be formed in a lower plug 6 of the case 41, shown in FIG. 3, designed to be force-fitted at the lower end of this case 41. A peripheral boss 61 of this plug 6 can then engage in a complementary peripheral groove formed on the inner surface of the case 41, to lock its position.

As shown in Figure 1, the neutralization cartridge 4 is designed to be placed vertically, or substantially vertically, in the tank 1, so as to allow a gravity flow condensate. This neutralization cartridge 4 is intended to be replaced regularly, it is removably assembled in an opening of the plate 11. The plate 11, a portion of which is shown in Figure 4, in fact comprises pre-cuts 110 surrounding a shutter portion 111, which is connected to the rest of the plate only by tongues 112. This shutter portion 111 can be easily removed, by breaking the tongues 112, to form in the plate 11 an opening whose dimensions , defined by the pre-cuts 110, correspond to the outer diameter of the cartridge 4. The opening formed thus allows the introduction of the lower part of the cartridge into the tray 1 through the plate 11. The neutralization cartridge 4 comprises a peripheral boss 45 which is intended to bear on the upper surface of the plate 11, around the opening defined by the pre-cuts 110. The distance between e this peripheral boss 45 and the lower end of the cartridge 4 is advantageously defined so that the lower end, formed by the feet 43, is in contact with the bottom of the tray 1 or close to it when the boss 45 is in contact with the plate 11. In addition, one or more pads 46 are formed on the cartridge 4 below the peripheral boss 45. These pads can enter the opening defined by the pre-cuts 110 of the plate, passing by notches 113 appearing at the periphery of the opening and resulting from the break tabs 112. One of these notches is shown in dashed lines in Figure 4. Once these pads 46 introduced into the tray 1, and the boss 45 bearing on the upper surface of the plate 11, a pivoting of the cartridge 4 along its longitudinal axis allows the pins 46 to move away from the notches 113, and to place these pads 46 resting on the lower surface of the plate 11 so as to block the longitudinal sliding of the cartridge 4 relative to the plate 11. This removable locking of the cartridge 4 on the plate 11 is particularly easy to implement and requires little adaptation on the hardware existing to date. Operation of the neutralization Once the cartridge 4 has been assembled in the tank 1, a condensate inlet pipe can be assembled on the inlet opening 42 of this cartridge. The acid condensates, for example from a boiler, thus arrive through the upper end of the cartridge 4, and run off on aggregates 5. During this direct contact, the acidic condensates react with the surface of the aggregates 5, generating a redox chemical reaction, which has the effect of reducing their acidity. It should be noted that the fact that the condensates come into direct contact with the aggregates emerged, without first being diluted in a liquid in which these granules would be immersed, ensures a better acid neutralization efficiency. To increase the effectiveness of the acid neutralization, it is provided according to a preferred embodiment of the invention that the aggregates 51 located in an upper portion of the cartridge 4 form small grains, for example of diameters between 2 and 3 mm, to increase contact surfaces between condensate and aggregates. The chemical reaction between the condensates and the aggregates can form sludge that may clog the interstices between the aggregates and thus plug the cartridge 4. Moreover, the aggregates decreasing in diameter as they wear in contact with them. acids, may clog the holes in the outlet opening of the cartridge. To avoid such clogging which would lead to damaging consequences, such as the risk of condensate leakage and poor evacuation of condensates, it is provided, according to an advantageous embodiment of the invention, that the aggregates 52 placed in a lower portion of the cartridge 4 form coarse grains, for example of diameter of the order of 5 to 6 mm. These large grains, which preferably have a diameter at least double that of the holes of the outlet opening, are not likely to plug these holes and form between them important interstices allowing a good flow of sludge generated by the chemical reaction between acids and aggregates. Advantageously, these large grains are of average size greater than the average dimensions of the aggregates 51 placed in the upper portion of the cartridge 4. The fine grains placed in the upper portion of the cartridge thus allow, for an equal volume of aggregates, a greater contact area between the condenser and the aggregates. It is important, however, that the fine grains do not have a diameter less than one tenth of the coarse grain diameters, so that they do not flow into the interstices of coarse grains.

The combination of coarse grains in a lower portion of the cartridge, through which the liquid flows, and finer grains, preferably at least 30%, in an upper portion of the cartridge, between which the liquid, therefore allows to ensure both a better efficiency of the neutralization of acids and a reduction of the risk of sludging of the neutralization device. It should be noted that such a cartridge having aggregates whose average size in an inlet portion of said cartridge is less than the average size of the aggregates located in a lower portion of said cartridge, could be advantageously used in other types of condensate neutralization devices than that of the invention.

As shown in Figure 1, the bottom of the neutralization cartridge 4 is located below the minimum level 31 of liquid in the tray 1. This minimum level corresponding to the stop level of the pump, there is permanently a minimum amount of liquid in the tank corresponding to this minimum level. In this way, the aggregates at the bottom of the cartridge are permanently immersed. As the level of liquid in the tank 1 regularly varies between its lower level 31 and its upper level 32, this variation in level causes a displacement of liquid ensuring the regular washing of the aggregates situated at the bottom of the cartridge, which limits the risks of slush. Furthermore, a lower part of the aggregates remaining permanently in contact with the condensate contained in the tank, the reaction between these aggregates and the condensates can continue, if the condensates contained in the tank are still acidic. According to another possible neutralization solution, which is not shown and is not the subject of the claims, the cartridge 4 can also be placed in the tank to neutralize the condensates it contains, without being traversed by condensates entering the tank. This neutralization solution can be done with a cartridge as described in the various embodiments of the present application (in which the condensate inlet opening would not be necessary, however).

It can be implemented in addition to the use, according to the invention as described in the present application, of another cartridge through which the condensates pass, or be implemented independently, for example in the case of a flow rate low condensate does not require a high neutralization efficiency. Thus, this neutralization solution, which is not the subject of the claims would implement an acid condensate neutralization device, comprising a condensate collection tank and a cartridge containing an acid neutralization reagent and having a permeable opening to the acids. liquid but blocking the reagent, said cartridge being placed at least partly in said tray so that said opening is below a minimum level of liquid in said tray, and away from the bottom of the tray. This neutralization solution would have the advantage, compared with the solutions of the prior art, of preventing the accumulation of sludge with the aggregates, the sludge being able to fall into the tank because of the distance between the bottom of the bottom and the opening of the cartridge, and offer a neutralization over a long period, because of the large amount of aggregates that can be contained in the cartridge. Moreover, the arrangement of granules cartridge would facilitate their replacement during maintenance operations. In the embodiment of the invention shown in FIG. 1, the opening (or the openings, if any) for the outlet of the cartridge 4 is situated below the minimum level of the liquid 31 in the tank 1, and is so permanently immersed. Thus, the neutralization device according to the invention forms a siphon for preventing upwelling in the boiler by the condensate discharge pipes. Such a siphon is generally necessary on the condensate drain pipes of condensing boilers. The condensate neutralization device according to the invention ensures this function, it makes superfluous the installation of an additional siphon on the duct, and thus allows a simplification of the installation of the boiler. Moreover, the tray 1 containing a large amount of liquid, the risk that it dries is low. The neutralization device according to the invention therefore forms a particularly efficient siphon. The chemical reaction between acids and aggregates leads to a gradual destruction of these aggregates. Consequently, it is necessary, in order to maintain good acid neutralization efficiency, to replace these aggregates regularly, for example every year. Advantageously, the case 41 of the neutralization cartridge 4 is made of a transparent material, for example a transparent plastic. Thus, it is possible for the user to control the level of aggregates in the portion of the cartridge 4 protruding above the plate 11. The user can thus know, by a simple visual control not requiring disassembly, to when to replace the cartridge 11 to maintain a good level of neutralization. It may, for example, be recommended to replace this cartridge when the level of the aggregates drops below platen 11 (visual inspection without disassembly). The replacement of the aggregates can be done very simply and quickly by dismantling the cartridge 4 and replacing it with a new cartridge. The cartridge model can advantageously be standardized for the different models of pumps and condensate neutralizers. In the embodiment described with reference to FIG. 1, the neutralization device according to the invention forms a condensate pump.

This integration into the cartridge pump provides a compact simplification advantage of mounting. Of course, if this embodiment uses a centrifugal type pump, any other type of pump known to those skilled in the art can of course be implemented such as for example an oscillating piston pump, peristaltic, diaphragm, etc ...

Another Embodiment FIG. 5 represents an alternative embodiment of the invention that can be implemented in systems in which the evacuation of acid condensates is done in a gravitational manner, without it being necessary to carry out a lifting by a pump. As shown in FIG. 5, the neutralization system comprises a tank 91 closed by a plate 911. A cartridge 4, identical to that used in the condensate pump of FIG. 1, is assembled to the plate 911, for example with an assembly identical to that used between the cartridge 4 and the plate 11. in the same way as the assembly of this cartridge to the plate 11.

The tank 91 has an opening 92 allowing the evacuation of the condensates collected in the tank 91. The height of this opening 92 is chosen so that the liquid level 93, shown in dashed lines in FIG. 5, remains permanently at above the lower opening of the cartridge 4. Thus, this neutralization system shown in Figure 5 ensures simple effective neutralization of the acid and a siphon to prevent gas lift in the heating body of the boiler. Moreover, the maintenance of this acid neutralization device is particularly simple, as in the embodiment shown in FIG. 1. According to other possible embodiments of the invention, the neutralization cartridge may have a shape different. It is for example possible that the upper part of this cartridge, intended to remain above the plate 11, has larger dimensions to contain more aggregates, the lower portion of the cartridge being identical to that shown in FIG. Figure 2 to remain compatible with the tray 1 and the plate 11. Figures 6 to 8 thus represent two possible embodiments of the invention allowing the implementation of more aggregates to increase the performance of neutralization. FIG. 6 thus represents a neutralization cartridge 7 comprising a lower portion of holsters 71 of cylindrical shape, similar to the lower part of the holster 41 of the cartridge 4. This lower portion of holster 71, which can for example be manufactured by cutting a case 41, may advantageously be closed at its lower end by the same plug 6, and have the same bosses and studs as the case 41, allowing attachment to the plate 11. Thus, the neutralization cartridge 7 can advantageously be assembled to a pump or a tank in exactly the same way as the cartridge 4. The upper part of the neutralization cartridge 7 is constituted by a chamber 72 having dimensions allowing the cartridge 7 to contain a larger quantity of aggregates that the cartridge 4. According to one possible embodiment, the assembly between the lower portion of cases 71 and the chamber 72 can be done by e mboitment allowing the rotation of the lower portion of cases 71 about its longitudinal axis, relative to the chamber 72. In this embodiment, which allows in certain situations to facilitate assembly to a pump or a tray, a seal 73 may be provided between the two portions of the cartridge. According to other possible embodiments, these two portions may for example be bonded, or be manufactured in one piece, as shown for example in FIG. 7. The neutralization cartridge 7 comprises a condensate inlet opening 74 lateral. To prevent the release of aggregates through this opening, it can be advantageously blocked by a plug 6 identical to that plugging the condensate outlet opening, allowing the liquids but not the aggregates. It should be noted that the shape of the chamber is indifferent to achieve the invention. It can thus form a cylinder of larger diameter than that of the lower portion of the case, have a rectangular shape, or for example form a spirally wound tube. This form must, however, allow the flow of liquids introduced therein, and have walls sufficiently inclined to prevent the accumulation of sludge in the cartridge. The neutralization cartridge 8 according to the variant represented by FIG. 7 also comprises a lower portion of case 81 closed by a stopper 6 and surmounted by a chamber 82. This chamber 82 has a rectangular section and is closed by a removable, leaktight cover 84 Advantageously, it contains a plurality of deflectors 86. These deflectors 86, one of which is represented by FIG. 8, comprise a frame 861 maintaining an inclined plane 862. These inclined planes, in the chamber 82, constrain the liquids entering the chamber through the inlet opening 83 to make a longer path, in contact with the aggregates filling the chamber, before reaching the outlet opening of the cartridge 8. The deflectors 86, which can be used in large numbers variable depending on the dimensions of the chamber, thus allow a more effective neutralization. To prevent sludge deposits on inclined planes, it is important that they maintain a sufficient inclination, for example of the order of 10 ° relative to the horizontal. It should be noted that the cartridge 8 comprises a stand 85 allowing it to bear stably on the plate in which it is mounted. According to a particular embodiment, this stand can be provided with a centering system on the plate to prevent the rotation of the cartridge 8 around the lower portion of case 81. According to another possible embodiment, the same chamber could be associated with several lower support parts engaged in the same plate, to allow a better flow or an additional guarantee against the risk of clogging of the exit opening.

Those skilled in the art can easily implement other variants of the present invention to adapt to particular situations. It will thus be able to use cartridges of various shapes, and adapted deflectors, for example helical deflectors for cylindrical chambers, etc.

Claims (15)

REVENDICATIONS1. Acid condensate neutralization device comprising a condensate collection tank (1, 91) and a cartridge (4, 7, 8) containing an acid neutralizing reagent and having an inlet opening (42, 74, 83) condensates and a condensate outlet opening, characterized in that said cartridge (4, 7, 8) is at least partly placed in said container (1, 91), so that said outlet opening is below a minimum level (31, 93) of liquid in said container (1, 91). 2. Device for neutralizing condensates according to claim 1 characterized in that at least a portion of the reagents contained in said cartridge (4, 7, 8) is located above a maximum level (32) of liquid in said tray (1, 91). 3. Device for neutralization of acid condensates according to any one of the preceding claims, characterized in that it comprises a device for lifting (2) condensate collected in said tray (1), so as to form a lift pump of condensates. 4. Condensation neutralization device according to claim 3, characterized in that said lifting device (2) generates movements of liquid in said tank (1), so as to contribute to the cleaning of said outlet opening of said cartridge ( 4, 7, 8) and / or reagents located near said outlet opening. 5. Device for condensate neutralization according to any one of the preceding claims, characterized in that said reagent contained in said cartridge (4, 7, 8) is formed of aggregates (5, 51, 52) capable of reacting with acids contained in the condensate entering through said inlet opening (42, 74, 83) to neutralize them. Condensation neutralization device according to claim 5, characterized in that the average size of the aggregates (52) in a lower portion of said cartridge (4, 7, 8) is at least 30% larger than the size. average aggregates (51) located in an upper portion of said cartridge (4, 7, 8). Condensation neutralization device according to one of the preceding claims, characterized in that said cartridge (4, 7, 8) is placed substantially vertically in said tray (1, 91), so as to allow a gravity flow of the condensates through said cartridge (4, 7, 8). 8. Device for condensate neutralization according to any one of the preceding claims, characterized in that said cartridge (4, 7, 8) is manufactured at least partly in transparent material, so as to allow a visual control of the neutralization reagent acids it contains. 9. Condensation neutralization device according to any one of the preceding claims, characterized in that said cartridge (4, 7, 8) is removably mounted on an upper wall of said tray (1, 91). 10. Condensation neutralization device according to claim 9, characterized in that at least a portion of the cartridge (4, 7, 8) extends above the level of said upper wall. Condensation neutralization device according to claim 10, characterized in that a cartridge portion extending above the level of said upper wall has a wider section than the cartridge portion extending below said wall. higher. Condensation neutralization device according to one of Claims 10 and 11, characterized in that the quantity of reagent in said cartridge (4, 7, 8) is such that, before use, a part of the reagent extends above the level of said upper wall. 13. Device for condensate neutralization according to any one of the preceding claims, characterized in that said cartridge (4, 7, 8) comprises support elements (43) bearing on the bottom of said tray (1, 91). and making it possible to keep said outlet opening at a distance from said bottom. 14. Device for condensate neutralization according to any one of the preceding claims, characterized in that said cartridge (8) comprises deflection means (86) increasing the path to be traveled forcondensates, in contact with said neutralization reagent, between said inlet opening (83) and said outlet opening. Condensation neutralization device according to one of the preceding claims, characterized in that said cartridge (4, 7, 8) is configured to allow gravity flow to said outlet opening of all liquid therein. penetrates through said inlet opening (42, 74, 83).